Effect of Zeolite and tire granules on cement stabilization of the sand

Document Type : Research Article

Authors

1 M.S.c student, Qom university of technology

2 Faculty Qom university of technology

Abstract

Soil stabilization is one of the important issues as an improvement method of weak soils in geotechnical engineering. The increasing amount of rubber wastes and their depots is a significant environmental problem. In geotechnical engineering, wastes can be used to improve soils. On the other hand, cement production causes environmental pollution. If natural cementitious materials such as zeolite, which have abundant resources in Iran, are used, it improves the environment while being economical. In this research, the use of rubber granule and zeolite as additives in the stabilization of sandy soils with cement, is evaluated. For this purpose, unconfined compressive tests on 28-days samples with different amounts 6, 8 and 10% of cement, different percentages of 0, 10, 30, 50, 70 and 90 of zeolite as cement substitute and percentages 0, 2.5, 5, 7.5, 10 and 12.5 of rubber granules, have been performed. The results show that not only the replacement of rubber granules and zeolites does not reduce the strength but also can increase the final strength by a maximum of 100% and also the strainability of the samples up to a maximum of 58%. The results show that rubber granules improve the stabilizing performance in the presence of zeolite. Electron microscopy (SEM) imaging of the samples showed the cohesion and integrity of the stabilization due to the addition of zeolite and rubber granules. The best mixing composition in the present study is 7.5% rubber granules and 30% zeolite as cement substitute.

Keywords

Main Subjects

References

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Amirkabir Journal of Civil Engineering
Volume 54, Issue 2
May 2022
Pages 759-774

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